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The thermal and dielectric properties of diamond/SiC composites prepared by polymer impregnation and pyrolysis

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2023, 33(2), pp.597~604
  • DOI : 10.1007/s42823-022-00448-1
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : July 14, 2022
  • Accepted : December 15, 2022
  • Published : March 1, 2023

Liu Pengfei 1 He Xinbo 1 Qu Xuanhui 1

1Institute for Advanced Material and Technology, University of Science and Technology Beijing

Accredited

ABSTRACT

This article reported a simple method for preparing diamond/SiC composites by polymer impregnation and pyrolysis (PIP) process, and the advantages of this method were discussed. Only diamond and SiC were contained in the diamond/SiC composite prepared by PIP process, and the diamond particles remained thermally stable up until the pyrolysis temperature was increased to 1600 °C. The pyrolysis temperature has a significant impact on the thermal conductivity and dielectric properties of composites. The thermal conductivity of the composite reaches a maximum value of 63.9 W/mK when the pyrolysis temperature is 1600 °C, and the minimum values of the real and imaginary part of the complex permittivity are 19.5 and 0.77, respectively. The PIP process is a quick and easy method to prepare diamond/SiC composites without needing expensive equipment, and it is of importance for promoting its application in the field of electric packaging substrate.

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